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Multi-Step Likelihood-Ratio Correction for Reinforcement Learning with Verifiable Rewards

NFPO augments PPO with an N-step forward trace to reduce structural bias and control variance via cumulative token likelihood ratios, improving reasoning performance.

Deokgyu Yoon, Hyungkyu Kang, Joongkyu Lee, Byeongchan Kim and 3 more

Sydney Poster Session 6, Thu, Dec 10, 5:00 PM–8:00 PM, Hall 1-4 · Published 2026

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9/20 AI panelreviewers recommend it

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AI panel: 9 of 20 reviewers recommend it
lenient 3/5
medium 6/10
strict 0/5